It certainly doesn't make it any easier to swallow, but the government has been making these "worst case scenario" plans for years, and most likely all the way back to the revolutionary war. When they actually set one of these up, I'll be right there with your friend breaking down walls freeing citizen prisoners.
I bet the government has documents detailing how to defend against alien invasion, and an uprising of the apes, but it doesn't mean that aliens are landing, or the government is going to start eradicating primates. Has anyone actually found a camp, or a proposed camp? Not to my knowledge, and I am sure that if there were, more sites than rt, and infowars would be carrying some kind of commentary on it.
I am healthily skeptical about our government's intentions, but if this was actually a plan they intended to carry out, this document would never see the light of day.